
Hi @rae,
You might not be able to directly manage bing.com, but you can configure Edge new tab (Microsoft Edge Enterprise new tab page). There you can customize the layout, content and more via Microsoft 365 admin center with your admin account.
For more information of how to customize the Enterprise new tab page, please read Microsoft Edge Enterprise new tab page.
Additionally, there're some useful group policies for you to manage the new tab experience here.
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Best Regards,
Shijie Li